Mgr Marini has been commenting on several aspects of the ancient tradition of focusing on Christ either through eastward orientation of the Eucharistic Prayer or where the crucifix or other image of Christ 'stood in for' eastward orientation.
We are in danger of losing this as in the past everyone (including the priest) prayed towards the same point - showing that the Lord was coming and that, together, we all looked towards Him.
He also posited that kneeling before the presence of the Lord makes it all the clearer that it is really Jesus and implies our adoration of Him. Not just that we receive Him but that we kneel before Him.
Mgr Marini asked us to listen anew to what the Holy Father says in his writings and by example in the Papal liturgies. The Holy Father distributes Communion ALWAYS to communicants kneeling and ALWAYS on the tongue because such remains a law of universal character more than just his personal choice. He expects priests and people to follow his example.